There was a couple who had been married for a long time,and one day, they were walking through the park together, when they saw a young couple sitting on a bench, kissing each othervery passionately. So the wife said to the husband, "Honey,why don't you do that?" And the husband said, "How? I don'teven know that lady!"

参考中文：
有一天，一对结婚很久的夫妻一起步行经过公园时，看到一对年轻夫妇坐在长椅上热吻，太太就跟先生说：“亲爱的！你为什么不那样做呢？”先生说：“怎么行呢？我还不认识那位小姐呢！”